5. Circular Statistics- This is the circular package build over the R port of the CircStats package by Ulric Lund from 'Topics in circular Statistics' (2001) S. Rao Jammalamadaka and A. SenGupta, World Scientific.

8. Testing external pointers in C++- Testing external pointers with finalization in R using C++. Show how to create C++ objects with external pointers from R which are deleted automatically from R. After installing and loading the package in R, type help(testcpp) to get started.